Pneumatic Brake Anti-Rollover Control Using Recovered Air Pressure
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Solution Overview
Problem
Existing anti-rollover devices for heavy-duty vehicles are complex in structure, costly to install, and have limited anti-rollover effectiveness, with high energy consumption and stability issues.
Innovation Solution
A compact anti-rollover apparatus utilizing a pneumatic brake system with an anti-yaw module, anti-roll module, electronic control unit, yaw velocity sensor, and vehicle roll angle sensor, which includes primary and secondary air reservoirs, solenoid valves, and pressure sensors to control brake units and air flow for stabilizing heavy-duty vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional power sources and complex mechanisms are used to provide anti-rollover torque, then the anti-rollover effect is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent combines the anti-rollover function with the existing pneumatic brake system by integrating the air reservoir and control valves into the brake system's existing structure. The brake chamber serves dual purposes: normal braking and generating anti-rollover torque through differential braking of left and right wheels, eliminating the need for separate power sources and complex mechanisms.
Solution Approach 2:
The pneumatic brake system is designed to perform multiple functions: normal braking, anti-rollover protection, and energy recovery. The air reservoir stores compressed air for both braking operations and anti-rollover torque generation, while the control valves manage both functions through the same mechanical components, achieving multi-functionality without increasing device complexity.
2Loss of energy
If residual high-pressure gas from pneumatic brakes is recovered and reused, then energy consumption is reduced, but the system complexity increases
Solution Approach 1:
The patent recovers residual high-pressure gas from the pneumatic brake system's air reservoir that would otherwise be discarded after braking operations. This recovered compressed air is reused to power the anti-rollover mechanism, eliminating the need for external power sources and reducing energy consumption while utilizing existing system components.
Solution Approach 2:
The system serves itself by using its own residual energy resources. The pneumatic brake system's remaining compressed air in the air reservoir automatically becomes the power source for anti-rollover protection, creating a self-sufficient energy cycle that reduces external energy requirements without adding complex energy management systems.
3Stability of the object's composition
If the vehicle mass is increased to improve stability, then the running stability is improved, but the center of gravity increases and negatively impacts running stability
Solution Approach 1:
The patent applies differential braking to create counter-torque that opposes the rollover tendency. By applying brake force to the lower wheel during rollover, the system generates an opposing moment that counteracts the gravitational force causing rollover, effectively using force-based counterweight rather than mass-based stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a simple, reliable, and energy-efficient anti-rollover system that improves both yaw and roll stability, reduces installation complexity, and conserves energy by utilizing residual high-pressure gas, while ensuring quick response and effective rollover prevention.
Implementation Method 1
utilizing residual high-pressure gas from the pneumatic brake system
Implementation Method 2
yaw velocity sensor
Implementation Method 3
vehicle roll angle sensor
Implementation Method 4
brake units arranged respectively at front left, front right, rear left and rear right wheels
Data Source
AI summary
An anti-rollover apparatus and control method for heavy-duty vehicles with a pneumatic brake system includes an anti-yaw module, an anti-roll module, an electronic control unit (ECU) (10), a yaw velocity sensor (12), and a vehicle roll angle sensor (18). The ECU (10) controls solenoid valves (4, 9, 11, 19, and 24) to achieve braking of part of wheels to obtain anti-yaw torques and improve the yaw stability of the heavy-duty vehicles. The ECU (10) controls gas switch valves (21 and 22) to spray high-pressure gases recovered in brake chambers (1, 13, 16, and 26) out, anti-roll torques are obtained through the jet reactive force, and the roll stability of the heavy-duty vehicles is improved.